CYCLOSTOMA.—Ptate XIII. 
tudinaliter confertissime funiculato-striatis, suturis rude | 
plicato-crenatis ; apertura circulari, labro latissimé | 
concavo-dilatato, marginibus subauriculatis. 
THE FRINGE-SUTURED CycLostoma. Shell narrowly um- 
bilicated, conically turreted, silky-white, tinged and 
obscurely banded with reddish-brown ; whorls con- 
vex, longitudinally very closely cord-striated, sutures 
rudely plicately crenated ; aperture circular, lip very 
broadly concavely dilated, margins subauriculated. 
SoweErBy, Thesaurus Conch. p. 143. pl. 28. p. 162, 163. 
Choanopoma thysanoraphe, Gray. 
Hab. Jamaica. 
In this species the longitudinal striz are perfectly 
smooth and cord-like. 
Species 83. (Fig. a, 6, Mus. Cuming.) 
CycLostomMa REDFIRFLDIANUM. Cyel. testd angusté um- 
bilicatd, ovato-turritd, sericeo-albida, rufo-fuscescente 
nitide fasciatd ; anfractibus convewis, longitudinaliter 
confertissime funiculato-striatis ; apertura circulari, 
labro late concavo-dilatato, intus purpureo-sanguineo, 
marginibus subauriculatis. 
REDFIELD’s CycLosroma. Shell narrowly umbilicated, 
ovately turreted, silky-white, neatly banded with 
reddish-brown ; whorls convex, longitudinally very 
closely cord-striated ; aperture circular, lip broadly 
coneavely dilated, edged with purple-blood within, 
margins slightly auriculated. 
Apams, Contrib. to Conch. No. 1. p. 10. 
Hab. Jamaica. 
Like the last species, but distinguished by a neat paint- 
ing of bands, and by a rich purple-blood stain of colour 
on the inner edge of the margin of the aperture. 
Species 8+. (Mus. Cuming.) 
Cychostoma GkIsEUM. Cyecl. testd minute umbilicatd, 
conico-turritd, lilaceo-grised, infra peripheriam fascia 
pallida alteraque fusculd ornata ; anfractibus convexis, 
spiraliler confertim liratis, liris albidis ; apertura 
oblique ovatd, labro subexpanso. 
Tur Grey CycLostoma. Shell minutely umbilicated, 
conically turreted, lilac-grey, ornamented with a pale 
band, and then a brownish band beneath the peri- 
phery ; whorls convex, spirally closely ridged, ridges 
whitish ; aperture obliquely ovate, lip a little ex- 
panded. 
Preirrer, Pro. Zool. Soc. 1853, p. 51. 
Hab. Madagascar. 
This has very much the appearance of C. subliratum in 
a well developed state. 
